PDF Practice Packet 3rd Grade Math - Weebly 4feet 2 f et 4feet + 2feet perimeter = 12feet Find the perimeter of each figure. 1. 2. perimeter = perimeter = 3. 4. perimeter = perimeter = 5. Sam's garden is a perfect square. Each side measures 8 feet. What is the perimeter of his garden? 6. Leslie drew a triangle on the board. Each side measured 30 centimeters.